NanaNina, sorry if my last paragraph came across more flippantly than I meant it, I know these things are done very very carefully and consideredly. What I meant was: in the midst of my musings about how infertile couples could perhaps have their pain eased by adoption, I should also also acknowledge that for that to happen, someone (unless dead) will have to lose their child; and that is not an easy decision to make.
A lot of people on this thread seem to think that stressing medical causes of infertility justifies publically funded treatment. I don't know why that should be the case; I don't know why an arbitrary demarcation of medical = worthy, and by implication, societal causes of childlessness as less so. (I suppose it might be some sort of subconscious conflation of invalid = victim = blameless or something)
If I did not have children it would arguably be because of mental health issues, arguably because of disorganisation. I did not arrange my life towards having children (until it was nearly too late) - good stable relationship, good income, good home - because I was depressed and was not able to, and also didn't think I was worth it. If I did not have children, I would be very sad. Arguably my problems could have been solved sooner by counselling (actually what happened was a very forthright friend took me in hand, but other than her no one seemed to give a shit about the fact that I was a blatant mess in a thousand ways). Treatment was not forthcoming. Why would such a person be less deserving than someone with a blocked tube?
Similarly, if a woman who is having difficulty conceiving is told that it may be because she is overweight, it is very unlikely that she will receive any effective help to remedy this. Why is she less important than the blocked tube person?
If a person is desperate to have children but doesn't attempt to conceive because she feels that her income / housing situation is too unstable, there is no help for her either. This is a huge problem for young people. If you could have children without worrying about where they were going to live or how you could support them, maybe people wouldn't be panicking in their late 30s or 40s.